>How many iterations to match Apple?

Until AMD can built a tailor made OS for their chips and build their own laptops.

Here's an M4 Max running macOS running Parallels running Windows compared to AMD's very best laptop chip:

https://browser.geekbench.com/v6/cpu/compare/13494385?baseli...

M4 Max is still faster. Note that the M4 Max is only given 14 out of 16 cores, likely reserving 2 of them for macOS.

How do you explain this when Windows has zero Apple Silicon optimizations?

Maybe Geek bench is not a good benchmark?

Maybe it is? Cinebench favors Apple even more.

GB correlates highly with SPEC. AMD also uses GB in their official marketing slides.

Geekbench is the closest thing to a good benchmark that's usable across generations and architectures.